Results 81 to 90 of about 3,052 (255)
The Chemical Record, EarlyView.This publication describes how R. B. Woodward and Roald Hoffmann crafted their masterpiece publications. Illustrations include Woodward's first draft of the famous “Violations There are none. Nor can violations be expected of so fundamental a principle of maximum bonding.” Original but discarded text shows the stepwise paths toward the W‐H masterpieces.
Jeffrey I. Seeman
wiley +1 more source
Journal of Space Weather and Space Climate, 2020 Medium-scale traveling ionospheric disturbances (MSTIDs) are fluctuations in the plasma density that propagate through the upper layer of the atmosphere at velocities of approximately 100 m/s and periods reaching some tens of minutes.
Timoté Cristhian Camilo +5 more
doaj +1 more source
Boosting Embodied Visual Localisation Through Multi‐Granular Semantics and Multi‐Robot Consensus
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT Achieving high accuracy and synergy remains extremely difficult for multi‐robot embodied visual localisation, which suffers from persistent real‐world challenges such as viewpoint ambiguity, appearance variation and dynamic occlusion. Conventional optimisation‐based methods often lead to incorrect feature matching without domain adaptation ...
Wenshuai Wang +4 more
wiley +1 more source
On InSAR ambiguity resolution for deformation monitoring [PDF]
, 2006 Integer carrier phase ambiguity resolution is the key to fast and high-precision satellite positioning and navigation. It applies to a great variety of current and future models of GPS, modernized GPS and Galileo.
Teunissen, Peter
core +1 more source
Research on GPS geometry-based observational stochastic error model
Tongxin xuebao, 2019 Aiming at the problem of not enough influencing factors were considered in traditional methods,a much more realistic stochastic model was built.In which error corrections were introduced into the geometry-based function model,an improved least squares ...
Taoyun ZHOU +4 more
doaj +2 more sources
Integer Ambiguity Resolution Algorithm Based On Different Baseline Method
DEStech Transactions on Computer Science and Engineering, 2018 Carrier phase observation can greatly improve the accuracy of navigation and positioning, but the existence of ambiguity will seriously affect the accuracy of the results. This paper analyzes the advantages and disadvantages of LAMBDA algorithm for integer ambiguity resolution. The problem of constructing search domain leads to long search time.
Shengge Zhang, Naiping Cheng, Shuyan Ni
openaire +2 more sources
FAST INTEGER AMBIGUITY RESOLUTION IN GPS KINEMATIC POSITIONING USING LEFT NULL SPACE AND MULTI-TIME (INVERSE) PAIRED CHOLESKY DECORRELATION [PDF]
, 2015 Aiming at the problems that huge amount of computation in ambiguity resolution with multiple epochs and high-order matrix inversion occurred in the GPS kinematic relative positioning, a modified algorithm for fast integer ambiguity resolution is proposed.
Zhao, Xiubin +3 more
core +5 more sources
Remote Sensing, 2018 Integer ambiguity resolution (IAR) is important for rapid initialization of precise point positioning (PPP). Whereas many studies have been limited to Global Positioning System (GPS) alone, there is a strong need to add Globalnaya Navigatsionnaya ...
Yanyan Liu, Shengfeng Gu, Qingquan Li
doaj +1 more source
Best practices in `0 K' DFT energy calculations on molecular crystal structures
Acta Crystallographica Section C, EarlyView.This article describes best practices for `zero Kelvin' energy calculations on molecular crystals and is targeted for non‐experts who would like to perform their own calculations or assess the accuracy and validity of such calculations reported in the scientific literature.This article describes best practices for `zero Kelvin' energy calculations on ...
Jacco van de Streek, Erin R. Johnson
wiley +1 more source
GNSS carrier phase ambiguity resolution: challenges and open problems [PDF]
, 2007 Integer carrier phase ambiguity resolution is the key to fast and high-precision global navigation satellite system (GNSS) positioning and application.
Teunissen, Peter, Verhagen, S.
core +1 more source